<script setup lang="ts">
import {onBeforeUnmount, onMounted, reactive, ref} from "vue";
import type {ElForm} from "element-plus";
import {HOME_URL} from "@/config";
import {useRouter} from "vue-router";
import {ElNotification} from "element-plus";
import {getTimeState} from "@/utils";
import {CircleClose, UserFilled} from "@element-plus/icons-vue";
import {initDynamicRouter} from "@/router/modules/dynamicRouter";

const router = useRouter();

type FormInstance = InstanceType<typeof ElForm>;
const loginFormRef = ref<FormInstance>();
const loginRules = reactive({
  username: [{required: true, message: "请输入用户名", trigger: "blur"}],
  password: [{required: true, message: "请输入密码", trigger: "blur"}]
});

const loading = ref(false);
const loginForm = ref({
  username: '',
  password: ''
})

// login
const login = (formEl: FormInstance | undefined) => {
  if (!formEl) return;
  formEl.validate(async valid => {
    if (!valid) return;
    loading.value = true;
    try {
      await initDynamicRouter();
      // 跳转到首页
      await router.push(HOME_URL);
      ElNotification({
        title: getTimeState(),
        message: "欢迎登录 Owl-Admin",
        type: "success",
        duration: 3000
      });
    } finally {
      loading.value = false;
    }
  });
};

// resetForm
const resetForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return;
  formEl.resetFields();
};

onMounted(() => {
  // 监听 enter 事件（调用登录）
  document.onkeydown = (e: KeyboardEvent) => {
    if (e.code === "Enter" || e.code === "enter" || e.code === "NumpadEnter") {
      if (loading.value) return;
      login(loginFormRef.value);
    }
  };
});

onBeforeUnmount(() => {
  document.onkeydown = null;
});
</script>

<template>
  <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" size="large">
    <el-form-item prop="username">
      <el-input v-model="loginForm.username" placeholder="用户名：admin / user">
        <template #prefix>
          <el-icon class="el-input__icon">
            <user/>
          </el-icon>
        </template>
      </el-input>
    </el-form-item>
    <el-form-item prop="password">
      <el-input v-model="loginForm.password" type="password" placeholder="密码：123456" show-password
                autocomplete="new-password">
        <template #prefix>
          <el-icon class="el-input__icon">
            <lock/>
          </el-icon>
        </template>
      </el-input>
    </el-form-item>
  </el-form>
  <div class="login-btn">
    <el-button :icon="CircleClose" round size="large" @click="resetForm(loginFormRef)"> 重置
    </el-button>
    <el-button :icon="UserFilled" round size="large" type="primary" :loading="loading"
               @click="login(loginFormRef)">
      登录
    </el-button>
  </div>
</template>

<style scoped>
@forward "../index.scss";
</style>
